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Author Topic: ME7.5 skip pulse at startup  (Read 12465 times)
jtorres
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« on: March 25, 2014, 01:05:19 AM »


Hello guys, i want to know if there is a parameter that allows to count or skip a certain amount of crank pulses at the engine startup, in order for the oil pump to make pressure before the engine fires.

This engines start right away and i saw that in megasquirt there is a function that you can set a number of pulses to skip before ignition happens. I think this is very good for the engine´s life.
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titi65
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« Reply #1 on: March 26, 2014, 06:24:09 AM »

Is it for ME7 ?
Do you have DAMOS ?

If yes to the two question, then, yes, there is this function on ME7.

There's also less advance at starting to hurt less low engine parts.

I'll try to find name of parameter, but, without damos . . .pretty hard to find.
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nyet
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« Reply #2 on: March 26, 2014, 09:12:09 AM »

Should be in the FR if you dig around a bit.
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jtorres
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« Reply #3 on: March 26, 2014, 11:04:22 AM »

Yes and yes  titi65 Smiley starting advance adjust would be nice too.

Most people do not realize the kind of wear and engine has at startup.


what is the FR nyet?


« Last Edit: March 26, 2014, 11:07:22 AM by jtorres » Logged
nyet
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« Reply #4 on: March 26, 2014, 11:07:21 AM »

http://nefariousmotorsports.com/forum/index.php?topic=400.0title=
http://nefariousmotorsports.com/forum/index.php?topic=1883.0title=

Stickies, in this very forum.
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jtorres
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« Reply #5 on: March 26, 2014, 11:09:19 AM »

OK, Funktionsrahmen got it.
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jtorres
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« Reply #6 on: April 01, 2014, 11:10:45 PM »


My german is like zero to read the FR tho, so any further help will be very appreciated!

titi65, did you find something?
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titi65
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« Reply #7 on: April 02, 2014, 02:17:23 AM »

I've understood you've find what you're searching for  . . .
Visibly, not .
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jtorres
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« Reply #8 on: April 03, 2014, 12:09:08 AM »


i think the timing while cranking could be ZWSTT, am i wrong?


Do you think IGNDELAY is the one i am looking for? To do that kind of the skip pulse function?


(IGNDELAY : Siehe Kapitel 2.12 , wenn gew¨unscht dann maximal gleich der Anzahl
der Segmente f¨ur eine 360 KW Drehung.)


Google translate seems to not keep up with technical german!
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userpike
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« Reply #9 on: April 03, 2014, 10:22:40 AM »

i think the timing while cranking could be ZWSTT, am i wrong?


Do you think IGNDELAY is the one i am looking for? To do that kind of the skip pulse function?


(IGNDELAY : Siehe Kapitel 2.12 , wenn gew¨unscht dann maximal gleich der Anzahl
der Segmente f¨ur eine 360 KW Drehung.)


Google translate seems to not keep up with technical german!


It seems you have found what you are looking for.

The trick for Google translate is using the pop up keyboard to change out the "o,u,a, etc" to the ones with the accent marks above. then the translation cleans up pretty well. for example: change gew¨unscht to gewünscht, f¨ur to für and so on.

(IGNDELAY : Siehe Kapitel 2.12 , wenn gew¨unscht dann maximal gleich der Anzahl
der Segmente f¨ur eine 360 KW Drehung.)  =  

(IGNDELAY : See Section 2.12, if desired then a maximum equal to the number
of segments for a 360? KW rotation.)

Sometimes you have to separate the word into smaller words to get it to translate also and this can get tricky because two different sequences change the translation and make it something totally different from the other. example:

Synchroanzahl Zündfreigabeverzögerung AZUE (1x1)

1 : 1 Umrechnug (dez/hex)/

      -
      0
-   0   0.00

translates to:

Synchro number Zündfreigabeverzögerung AZUE (1x1)

1: 1 Umrechnug (dec / hex) /

-
0
- 0 0:00

So I put a space in like this:
Synchroanzahl Zünd freigabeverzögerung AZUE (1x1)

1 : 1 Umrechnug (dez/hex)/

      -
      0
-   0   0.00

and get this:
Synchro Number ignition delay release AZUE (1x1)

1: 1 Umrechnug (dec / hex) /

-
0
- 0 0:00

I just add spaces and put them back and add a space elsewhere until it makes sense to me...then I go ask someone else what they think and/or check it in Bing translate.


« Last Edit: April 03, 2014, 10:36:24 AM by userpike » Logged
jtorres
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« Reply #10 on: April 04, 2014, 12:57:27 AM »


Thanks a lot userpike for the google translate über course! very helpful really.


So now, about the IGNDELAY the original value is 0, and the maximun value possible is 255 what should be there in order to get the crank around 2 or 3 seconds before the ignition kicks in?Huh

Also, is there a way for that to occur only when the engine is cold?


C´mon guys this is not precisely performance tuning, but it is tuning that helps the engine to last!
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nyet
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« Reply #11 on: April 04, 2014, 10:16:52 AM »

I'm pretty sure IGNDELAY is not what you want. I'm not sure what it does, but after looking at the FR, i doubt it inhibits ignition from cold start.

Also, unless you are in fuel cutoff, I don't think you want to be inhibiting spark, unless you want to flood your engine.

Finally, there is an English FR also, albeit for ME7.3.1 (Alfa)
« Last Edit: April 04, 2014, 10:27:24 AM by nyet » Logged

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userpike
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« Reply #12 on: April 04, 2014, 07:30:52 PM »


there is an English FR also, albeit for ME7.3.1 (Alfa)


this one has information missing. for example, the function description for BBGANG is missing. The heading is there but the content is not there.

pg502

FB BBGANG 21.10 Detailed description of function
<no content>
APP BBGANG 21.10 Application hint

Also after skipping around this FR, I found some of the content is still in German.

still extremely useful though, but it doesn't have all the answers.


I just did a search for IGNDELAY in it also and is nowhere to be found.
« Last Edit: April 04, 2014, 07:33:22 PM by userpike » Logged
titi65
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« Reply #13 on: April 04, 2014, 11:24:50 PM »

kfztnwakl and tvnwakl could be what you're searching for . . .
And for ignition:kfzwmnst ...

Check for them Wink.
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nyet
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« Reply #14 on: April 04, 2014, 11:32:50 PM »

you could also just remove your fuel checkvalve Smiley
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Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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